Are these shaders needed?

This is from Project Settings > Graphics.
I'm on URP (most recent package version) and on 2019.3.9f1

Questions:
1. Is Element 0 needed? Since I'm on URP and it uses its own set of shaders, can I remove this?
2. Elements 1-3, what are those used for?
3. Please correct me if I'm wrong, Element 4 is related to using the Sprite Renderer component and Element 5 is related to using the UI canvas, image, etc components, right?
4. Elements 6-8, are these video shaders used for recording things in-game? If my game does not have an in-game recording feature can I remove them?
5. Element 9, what is this for? Is it post-processing?

Thank you for helping me understand this!

 

Anybody? Am I the only one with such a weird question?

 

Bump for information help!

 

Someone has some answers for this today?

 

How about today? Anybody?

 

I would imagine you would not need any that you are not using.

 

How would I know? There are 5 questions unanswered.

 

You should know what shaders you are using in your project. If you click on an object in the game then the bottom of the Inspector will tell you the shader it uses. Also you can make a backup then remove them I guess and see if you get any errors. I find that writing your own for your project is for the best; for instance there were features of the sprite shader I did not need for a project so edited it and increased it's performance quite significantly.

 

Could you tell me what features you edited out? It might help me in optimizing my game!

 

It has been awhile. I'll post the code for the sprite shader I currently use which I believe increased performance from the default.

Code (C++):

1. Shader "Sprites/Sprite"
2. {
3.     Properties
4.     {
5.         [PerRendererData] _MainTex("Sprite Texture", 2D) = "white" {}
6.         [HideInInspector]_Color("Tint", Color) = (1,1,1,1)
7.     }
8.         SubShader
9.         {
10.             Tags
11.             {
12.                 "Queue" = "Transparent"
13.             }
14.  
15.             Cull Off
16.             Lighting Off
17.             ZWrite Off
18.             Blend One OneMinusSrcAlpha
19.  
20.             Pass
21.             {
22.             CGPROGRAM
23.                 #pragma vertex SpriteVert
24.                 #pragma fragment SpriteFrag
25.                 #pragma target 2.0
26.                 #include "UnitySprites.cginc"
27.             ENDCG
28.             }
29.         }
30. }